Year Dollars 1992-01-01 4301823 1997-01-01 5151566 2002-01-01 2271014 2003-01-01 23296879 2004-01-01 26366942 2006-01-01 37363558 2007-01-01 58883314 2008-01-01 11527141 2009-01-01 8528115 2010-01-01 21949128 2011-01-01 7053084 2012-01-01 8120586 2013-01-01 12876126 2014-01-01 43391730 2015-01-01 10458435 2016-01-01 13752004